Switch socket



April 23, 1929. F, LARAVA 1,710,264

SWITCH SOCKET Filed June 30, 1926- Application filed June 30,

This invention relates to a switch socket for a lau'ip or other electrical connection. The [u'incipal objects of the inventiongare to inrovide a simple and inexpensive switch socket which can he turned on and off by oscillation of a projecting handle and in which the parts are made of comparatively few pieces and only two pieces of insulation in the outer part.

Other objects and advantages of the invention will appear hereinafter.

Reference is to be had to the accompanying drawings in which Fig. 1 is a side View oi": a switch socket for a lamp constructed in accordance with this invention;

Fig. 2 is an enlarged central sectional longitudinal View of the same;

3 is a sectional VlOW ol the outer member on the line 3-8 oi? Fig. 2;

luig. et is a longitudinal central sectional View of the same with. the outerelectrical connection removed;

Fig. 5 is an end VlC'W thereof lroin the left of Fig. 4 looking into the outer shell;

Fig. (3 is a central longitiulinal scctioi'ial view oil? the internal cup;

Fig. T is an end View of the sun: nd

Fig. 8 is a diametrical sectional View of: the socket. I

This switch socket comprises two main parts, an outer shell 10 and the inner cup 11 The outer shell is formed of sheet metal with a drawn in end 12 which constitutes the bottom or end of the device and is pro Vided with an opening extending through it and with a couple of opposite notches 13 on the end extending radially. lt is pro- 'vided with the usual bayonet slot-s and with a circuiulerential slot 15 for a purpose to be described.

The shell 10 is mechanically connected with a cable 16 by a conducting member 17 having a shoulder 18 and a head 19 separated from each other. Between the two shoulders thus formed are two insulating washers 20 and 21 of Vulcanized fibre or the like. These are separated at their edges and between them comes the end wall 12 which has been described. It will be seen that on account of this construction the electric line is insulated from the shell 10. The inner insulating member 21 is of still material and is prrwided with a pair of radial slots 22 through it near its edge EATENT OFFICE.

ESTER, MAFESACHUSESTTS, A CORPORATION E0 CKET.

1926. Serial No. 119.720

Inside the shell 10 is located a sheet metal cup 11. This has a radial operating handle 2& extending through the slot 15 for swing in r This shit is wider than the thickness or the handle. The cup is provided with a I the bottom of the cup 11. The sheet metal oil? the cupis bent inwardly at 30 in one or more places to hold this disc 29 in place which engages the flange 31 atthe bottom of the cup. This flange is open and, with the disc 2i) furnishes a wide insulation against the contact of the metallic member 28 with the other metallic parts. On this flange 31 are two opposite radial projections 33 adapted upon the turning of the cup to pass into the slots 22. i

I h ave shown a one terminal lamp for engaging the plunger 26 and forcing it back into a position in which it is heldby the spring pressure in the bayonet slots asusual. The two insulating discs 29 and 21 are of sullicient strength to hold in place the metallic parts fastened thereto.

It will be understood that in the position shown in Fig. 2 the projections 33 are not in the slots 22. Consequently the conducting n'lctallic member 28 is held away from the flange 19. hen the handle 25 is turned to bring the projection 33 into the slots 22 the member 28 will be allowed to come down into contact with the end flange 19 on the conductor 17 which carries the cable 16. Therefore the circuit completed through these parts to the lamp and out again through the metallic parts thereof to the shell 10 which is grounded. The shell 10 is insulated by the three insulating discs from the central conducting line. When the handle 25 is turned again it brings the pro jections 33 up on the top of the disc 21 and separates the members 28 and 19 so asto shut ,fore, I do not wish to be limited to all the details of construction herein shown and described, but what I do claim is 1. In a switch socket, the combination of a shell of metal adapted to be connected. with one side of a circuit and hai' bayonet slot for the reception of the m base of a lamp for connecting the lamp {-3 the circuit, a metallic cup in the shell, a spring plunger carried by the metal constantly engaging the end oi th base and making the other connecion at that point, means for insulating th plunger from the cup, a conductor ca with an electric cable located in line \i;'' the spring plunger, projecting base of theshell, and insulated roni shell and cup, said cup having a p through it at the base through which base of the spring plunger project n for turning the cup, and means 31 cup for moving it outwardly so that base of the spring plunge and the ductor will be out of contact when the cup is turned into one position and in con; when turned to another position.

2111a switch socket, the con'ibinition with a metallic shell having an open I conductor centered in said end for com ing it to the circuit on one side, the shell acting as the other terminal, and an insulating disc insulating the shell from the conductor, of a cup within the shell adapted to be turned to two positions, said ing projections on the base for insulating disc, said disc havii sions in it for receiving said pro i allowing the ,cup to move lo: when turned to a certain positir spring plunger in the cup and i1 from it, and havin a base movable cup, whereby when the cup turned bring the base of the spring plun and out of contact with the end of sa ductor.

3. In a switch socket, the combina" with a metallic shell having an open end, of a conductor centered in said end connecting'the current on one side, the shell discs supporting said conductor and cup l a ring a base projectino' through to acting as the other terminal, two insulating sup- 5 ported by the shell and insulating the shell from the conductor, a cup within the shell adapted to be turned to two positions, said cup having integral metallic projections on the base for one of said insulating discs, said disc having depressions in it toireceiving said projections and allowing the cup to move longitudinally, said cup having an insulating disc therein and. spring plunger supported by the last-nan ldisc and insulated thereby from the cup and shell and projecting through the disc whereby when the cup moves lonitudinally it will bring the base ot the spring pluncr into and out of contact with end of conductor. 7

As an article of manul'a d me, a member comprising a dim receiving a lamp base, a c: ing into the end of the shell for lectric conducting cable sa an insulating disc in do rece' g of said electric coninictor and kee u insulated from the shell, said disc i'iaving openings therethrough oppositely arranged, an inner cup having projections cooperating with said openings for permitting the more ment oi the cup, and second lntflllill l d outside the end of the shell, said co: 7 member being held by the two discs.

5. As an article of manutac i I an electric switch comprising a metallic shell an a cup member adapted to fit in the metallic shell and having a handle projecting then from by which it may be turned to two sitions, a spring plunger in the center ot lower side, said cup having two oppo ite tegral projecti as, and an insnla havi depressions for receiving s; jections so that when the cup two limiting pos' ions these projections will control its position.

In testimony whereof I have hereunto affixed my signature.

FRANK L. LARAYA. 

